[
 {
  "id": "molicel-inr18650-p30b",
  "key": "cell_p30b",
  "category": "battery_cell",
  "vendor": "Molicel",
  "model": "INR-18650-P30B",
  "name": "Molicel INR-18650-P30B 18650 Li-ion cell, 3.0 Ah, 36 A continuous, flat top",
  "price_usd": 5.5,
  "price_checked": "2026-10-27",
  "price_note": "Li-ion Wholesale: $5.50 each, read 2026-10-27",
  "buy": [
   {
    "seller": "Li-ion Wholesale",
    "url": "https://liionwholesale.com/products/molicel-npe-inr-18650-p30b-36a-3000mah-flat-top-18650-battery-authorized-distributor",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 5.5,
    "stock": "available (store JSON)"
   },
   {
    "seller": "IMR Batteries",
    "url": "https://www.imrbatteries.com/products/molicel-p30b-18650-3000mah-30a-battery",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 6.99,
    "stock": "available (store JSON)"
   },
   {
    "seller": "18650BatteryStore",
    "url": "https://18650batterystore.com/products/molicel-p30b-18650-3000mah-36a-battery",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 8.99,
    "stock": "available (store JSON)"
   }
  ],
  "backup": {
   "what": "same cell, other US seller",
   "seller": "IMR Batteries",
   "price_usd": 6.99
  },
  "specs": {
   "diameter_mm": 18.6,
   "length_mm": 65.2,
   "mass_g": 47.0,
   "capacity_ah": 3.0,
   "continuous_a": 36,
   "charge_v_max": 4.2,
   "dimensions_basis": "maximum envelope (datasheet class); the brick is sized from cad/body_battery.py CELLS"
  },
  "sources": [
   "https://www.molicel.com/product/inr-18650-p30b/"
  ]
 },
 {
  "id": "daly-k-13s-100a-bt-uart",
  "key": "bms_daly_13s",
  "category": "bms",
  "vendor": "Daly",
  "model": "G08-RK-89704",
  "name": "Daly K-series smart BMS, Li-ion 13S 48 V, 100 A, Bluetooth + UART (common port, negative side)",
  "price_usd": 60.6,
  "price_checked": "2026-10-27",
  "price_note": "Daly (official store): $60.60 each, read 2026-10-27",
  "buy": [
   {
    "seller": "Daly (official store)",
    "url": "https://bmsdaly.com/products/daly-smart-lifepo4-bms-k-board-4s-12v-7s-8s-24v-16s-48v-li-ion-3s-12v-6s-7s-24v-100a-60a-40a-bms-for-18650-battery-pack-1",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 60.6,
    "stock": "available (variant \"Li-ion 13S 48V / 100A / BT+UART\"); ships after 3-5 days, 7-20 business days in transit",
    "seller_pn": "G08-RK-89704"
   },
   {
    "seller": "DalyElec on Amazon",
    "url": "https://www.amazon.com/dp/B0CXLYVP5B",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 95.47,
    "stock": "In Stock (sold and shipped by DalyElec), delivery quoted Nov 5-13"
   }
  ],
  "backup": {
   "what": "same BMS",
   "seller": "DalyElec on Amazon",
   "price_usd": 95.47
  },
  "specs": {
   "size_mm": [
    98,
    65,
    14
   ],
   "length_with_tabs_mm": 123,
   "tab_pitch_mm": 26,
   "mass_g_estimate": 110,
   "balance": "100 mA passive",
   "ports": "UART x 2 (one taken by the Bluetooth dongle), CAN/485, KEY, DIO, NTC-A, NTC-B",
   "switching": "common port, B-/P- (negative side)",
   "uart_ground": "B- (isolate it from the robot ground)",
   "cell_ovp_settable": true
  },
  "sources": [
   "https://bmsdaly.com/products/daly-smart-lifepo4-bms-k-board-4s-12v-7s-8s-24v-16s-48v-li-ion-3s-12v-6s-7s-24v-100a-60a-40a-bms-for-18650-battery-pack-1",
   "https://www.amazon.com/dp/B0CXLYVP5B"
  ]
 },
 {
  "id": "imr-18650-2p-nickel-0p15x18p5",
  "key": "nickel_2p_18650",
  "category": "battery_build",
  "vendor": "IMR Batteries",
  "model": "18650 2P nickel 0.15 x 18.5 x 5 m",
  "name": "Pure nickel strip, 18650 2P pre-shaped, 0.15 x 18.5 mm, 5 m roll",
  "price_usd": 39.99,
  "price_checked": "2026-10-27",
  "price_note": "IMR Batteries: $39.99 each, read 2026-10-27",
  "buy": [
   {
    "seller": "IMR Batteries",
    "url": "https://www.imrbatteries.com/products/18650-2p-pure-nickel-strip-roll-0-15mm-x-18-5mm-5m-16-4-feet",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 39.99,
    "stock": "available (store JSON)"
   },
   {
    "seller": "Li-ion Wholesale",
    "url": "https://liionwholesale.com/products/pure-nickel-strip-roll-0-15mm-0-2mm-thickness-6mm-10mm-widths",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 10.34,
    "stock": "0.2 x 8 mm x 20 ft available on 2026-10-27 (the sourcing report); straight strip, two side by side per link"
   }
  ],
  "backup": {
   "what": "straight 0.2 x 8 mm pure nickel, two strips per link",
   "seller": "Li-ion Wholesale",
   "price_usd": 10.34
  },
  "specs": {
   "thickness_mm": 0.15,
   "width_mm": 18.5,
   "length_m": 5
  },
  "sources": [
   "https://www.imrbatteries.com/products/18650-2p-pure-nickel-strip-roll-0-15mm-x-18-5mm-5m-16-4-feet",
   "https://liionwholesale.com/products/pure-nickel-strip-roll-0-15mm-0-2mm-thickness-6mm-10mm-widths"
  ]
 },
 {
  "id": "imr-18650-fish-paper-20",
  "key": "fish_paper_18650",
  "category": "battery_build",
  "vendor": "IMR Batteries",
  "model": "18650 fish paper rings 20 pcs",
  "name": "18650 terminal insulator rings, fish paper, 20 pcs",
  "price_usd": 0.0495,
  "price_checked": "2026-10-27",
  "pack_qty": 20,
  "pack_price_usd": 0.99,
  "price_note": "IMR Batteries: $0.99 per 20-pack, read 2026-10-27",
  "buy": [
   {
    "seller": "IMR Batteries",
    "url": "https://www.imrbatteries.com/products/18650-terminal-insulators-fish-paper-20pcs-green-round-rings-solid",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.99,
    "pack_qty": 20,
    "stock": "available"
   },
   {
    "seller": "Li-ion Wholesale",
    "url": "https://liionwholesale.com/products/18650-flat-top-battery-terminal-insulators-5pcs-matte-black",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.25,
    "pack_qty": 5,
    "stock": "available (5 pcs)"
   }
  ],
  "backup": {
   "what": "flat-top insulators, 5 pcs",
   "seller": "Li-ion Wholesale",
   "price_usd": 0.25
  },
  "specs": {
   "pcs": 20
  },
  "sources": [
   "https://www.imrbatteries.com/products/18650-terminal-insulators-fish-paper-20pcs-green-round-rings-solid",
   "https://liionwholesale.com/products/18650-flat-top-battery-terminal-insulators-5pcs-matte-black"
  ]
 },
 {
  "id": "imr-kapton-20mm",
  "key": "kapton_20",
  "category": "battery_build",
  "vendor": "IMR Batteries",
  "model": "Polyimide tape 20 mm x 30 m",
  "name": "Polyimide (Kapton) electrical tape, 20 mm x 30 m",
  "price_usd": 6.99,
  "price_checked": "2026-10-27",
  "price_note": "IMR Batteries: $6.99 each, read 2026-10-27",
  "buy": [
   {
    "seller": "IMR Batteries",
    "url": "https://www.imrbatteries.com/products/polyimide-electrical-tape-20mm-x-30m-kapton-tape",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 6.99,
    "stock": "available"
   },
   {
    "seller": "IMR Batteries",
    "url": "https://www.imrbatteries.com/products/polyimide-electrical-tape-50mm-x-30m-kapton-tape",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 8.99,
    "stock": "available (50 mm)"
   }
  ],
  "backup": {
   "what": "50 mm roll",
   "seller": "IMR Batteries",
   "price_usd": 8.99
  },
  "specs": {},
  "sources": [
   "https://www.imrbatteries.com/products/polyimide-electrical-tape-20mm-x-30m-kapton-tape",
   "https://www.imrbatteries.com/products/polyimide-electrical-tape-50mm-x-30m-kapton-tape"
  ]
 },
 {
  "id": "amass-xt90s-5pair",
  "key": "xt90s_pair",
  "category": "connector",
  "vendor": "Amass",
  "model": "XT90-S",
  "name": "Amass XT90-S anti-spark connector, male + female, 5 pairs",
  "price_usd": 2.596,
  "price_checked": "2026-10-27",
  "pack_qty": 5,
  "pack_price_usd": 12.98,
  "price_note": "Sky RC Hobby on Amazon: $12.98 per 5-pack, read 2026-10-27",
  "buy": [
   {
    "seller": "Sky RC Hobby on Amazon",
    "url": "https://www.amazon.com/dp/B074PTHZ3M",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 12.98,
    "pack_qty": 5,
    "stock": "In Stock (ships from Amazon)"
   },
   {
    "seller": "FLYRC on Amazon",
    "url": "https://www.amazon.com/dp/B08L3S2ZK8",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 14.99,
    "pack_qty": 3,
    "stock": "In Stock; 3 pairs with 150 mm 10 AWG pigtails"
   }
  ],
  "backup": {
   "what": "3 pairs with pigtails",
   "seller": "FLYRC on Amazon",
   "price_usd": 14.99
  },
  "specs": {
   "rating_a": 90
  },
  "sources": [
   "https://www.amazon.com/dp/B074PTHZ3M",
   "https://www.amazon.com/dp/B08L3S2ZK8"
  ]
 },
 {
  "id": "amass-xt60h-f-5",
  "key": "xt60h_f",
  "category": "connector",
  "vendor": "Amass",
  "model": "XT60H-F",
  "name": "Amass XT60H female, 5-pack (the robot's live ends: the charge port and the 48 V branch leads; D58)",
  "price_usd": 0.798,
  "price_checked": "2026-10-27",
  "pack_qty": 5,
  "pack_price_usd": 3.99,
  "price_note": "Pyrodrone: $3.99 per 5-pack, read 2026-10-27",
  "buy": [
   {
    "seller": "Pyrodrone",
    "url": "https://www.pyrodrone.com/products/amass-xt60h-connector-5pcs-female",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 3.99,
    "pack_qty": 5,
    "stock": "available"
   },
   {
    "seller": "RaceDayQuads",
    "url": "https://www.racedayquads.com/products/xt60-connector-1pc-choose-your-version",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.99,
    "stock": "available (single)"
   }
  ],
  "backup": {
   "what": "single XT60",
   "seller": "RaceDayQuads",
   "price_usd": 0.99
  },
  "specs": {},
  "sources": [
   "https://www.pyrodrone.com/products/amass-xt60h-connector-5pcs-female",
   "https://www.racedayquads.com/products/xt60-connector-1pc-choose-your-version"
  ]
 },
 {
  "id": "luna-charger-48v-advanced",
  "key": "charger_13s",
  "category": "charger",
  "vendor": "Luna Cycle",
  "model": "Luna Charger 48V Advanced 300W",
  "name": "Luna Charger 48V Advanced 300 W (13S): 1-5 A and 80/90/100 % knobs; charge at 90 % (to be metered: 53.3 V wanted)",
  "price_usd": 99.95,
  "price_checked": "2026-10-27",
  "price_note": "Luna Cycle: $99.95 each, read 2026-10-27",
  "buy": [
   {
    "seller": "Luna Cycle",
    "url": "https://lunacycle.com/luna-charger-48v-advanced-300w-ebike-charger/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 99.95,
    "stock": "Add to Cart active (El Segundo, CA)"
   },
   {
    "seller": "Grin Technologies on Amazon",
    "url": "https://www.amazon.com/dp/B0FLYNYC6N",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 329.99,
    "stock": "In Stock; Grin Standard Satiator, programmable 24-63 V: 53.3 V set directly"
   }
  ],
  "backup": {
   "what": "Grin Standard Satiator (exact 53.3 V)",
   "seller": "Grin Technologies on Amazon",
   "price_usd": 329.99
  },
  "specs": {
   "output_connector": "XT60 male or 2.1 mm barrel (choose XT60)",
   "size_mm": [
    184,
    89,
    51
   ],
   "mass_g": 1130,
   "note": "the 90 % setting voltage is not published: meter it before the first charge; the BMS cell over-voltage at 4.15 V is the backstop"
  },
  "sources": [
   "https://lunacycle.com/luna-charger-48v-advanced-300w-ebike-charger/",
   "https://www.amazon.com/dp/B0FLYNYC6N"
  ]
 },
 {
  "id": "flipsky-antispark-smart-enhanced-v2",
  "key": "main_switch",
  "category": "switch",
  "vendor": "Flipsky",
  "model": "ANSIFS20SH",
  "name": "Flipsky Anti Spark Switch Smart Enhanced 300A V2.0, 12-84 V (3-20S), 100 A continuous, 16 mm button",
  "price_usd": 52.0,
  "price_checked": "2026-10-27",
  "price_note": "Flipsky: $52.00 each, read 2026-10-27",
  "buy": [
   {
    "seller": "Flipsky",
    "url": "https://flipsky.net/products/flipsky-anti-spark-switch-smart-enhanced-300a-v2-0-for-electric-skateboard-ebike-scooter-robots",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 52.0,
    "stock": "available"
   },
   {
    "seller": "Flipsky",
    "url": "https://flipsky.net/products/flipsky-antispark-switch-pro-with-aluminum-pcb-case-200a-for-electric-skateboard-ebike-scooter-robots",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 48.0,
    "stock": "available; Antispark Pro V3.0 (AWAPFS14SH), 12-60 V: 53.3 V full is inside it"
   }
  ],
  "backup": {
   "what": "Antispark Pro V3.0 (60 V max, latching button)",
   "seller": "Flipsky",
   "price_usd": 48.0
  },
  "specs": {
   "size_mm": [
    60,
    45,
    16.5
   ],
   "voltage_range_v": [
    12,
    84
   ],
   "continuous_a": 100,
   "mode": "momentary (hold 0.3 s on, 1 s off); smart mode OFF"
  },
  "sources": [
   "https://flipsky.net/products/flipsky-anti-spark-switch-smart-enhanced-300a-v2-0-for-electric-skateboard-ebike-scooter-robots",
   "https://flipsky.net/products/flipsky-antispark-switch-pro-with-aluminum-pcb-case-200a-for-electric-skateboard-ebike-scooter-robots"
  ]
 },
 {
  "id": "blue-sea-5181-mrbf-80a",
  "key": "mrbf_80a",
  "category": "fuse",
  "vendor": "Blue Sea Systems",
  "model": "5181",
  "name": "Blue Sea 5181 MRBF terminal fuse 80 A, 58 V DC, 2 kA at 58 V",
  "price_usd": 20.5,
  "price_checked": "2026-10-27",
  "price_note": "go2marine: $20.50 each, read 2026-10-27",
  "buy": [
   {
    "seller": "go2marine",
    "url": "https://www.go2marine.com/products/mrbf-terminal-fuses-30-to-300-amps",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 20.5,
    "stock": "available"
   },
   {
    "seller": "go2marine",
    "url": "https://www.go2marine.com/products/mrbf-terminal-fuse-80-a-retail-pack",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 13.5,
    "stock": "available; Egis MRBF 80 A, 58 V DC"
   }
  ],
  "backup": {
   "what": "Egis MRBF 80 A",
   "seller": "go2marine",
   "price_usd": 13.5
  },
  "specs": {
   "rating_a": 80,
   "voltage_v_dc": 58,
   "interrupt_a_at_58v": 2000
  },
  "sources": [
   "https://www.go2marine.com/products/mrbf-terminal-fuses-30-to-300-amps",
   "https://www.go2marine.com/products/mrbf-terminal-fuse-80-a-retail-pack"
  ]
 },
 {
  "id": "egis-mrbf-block-single",
  "key": "mrbf_block_backup",
  "category": "fuse",
  "vendor": "Egis",
  "model": "MRBF block single output (UPC 850053879548)",
  "name": "Egis MRBF terminal fuse block, single output, 58 V DC, M8 stud",
  "price_usd": 17.25,
  "price_checked": "2026-10-27",
  "price_note": "go2marine: $17.25 each, read 2026-10-27",
  "buy": [
   {
    "seller": "go2marine",
    "url": "https://www.go2marine.com/products/mrbf-terminal-fuse-block-single-output-30-300-a-retail-pack",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 17.25,
    "stock": "available"
   },
   {
    "seller": "go2marine",
    "url": "https://www.go2marine.com/products/mrbf-terminal-fuse-block-30-to-300a",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 31.5,
    "stock": "available; Blue Sea 5191"
   }
  ],
  "backup": {
   "what": "Blue Sea 5191",
   "seller": "go2marine",
   "price_usd": 31.5
  },
  "specs": {
   "voltage_v_dc": 58
  },
  "sources": [
   "https://www.go2marine.com/products/mrbf-terminal-fuse-block-single-output-30-300-a-retail-pack",
   "https://www.go2marine.com/products/mrbf-terminal-fuse-block-30-to-300a"
  ]
 },
 {
  "id": "littelfuse-0997020",
  "key": "fuse_mini58_20a",
  "category": "fuse",
  "vendor": "Littelfuse",
  "model": "0997020.WXN",
  "name": "Littelfuse MINI 58V blade fuse 20 A (the RS-04 branches)",
  "price_usd": 0.61,
  "price_checked": "2026-10-27",
  "price_note": "LCSC: $0.61 each (10+: $0.50), read 2026-10-27",
  "buy": [
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C207028.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.61,
    "stock": "1,609",
    "seller_pn": "C207028"
   },
   {
    "seller": "element14",
    "url": "https://nz.element14.com/littelfuse/0997020-wxn/auto-blade-fuse-2a-58v/dp/2748837",
    "in_stock": true,
    "ships_from": "SG",
    "read_on": "2026-10-27",
    "source": "snippet",
    "stock": "listed (snippet)"
   }
  ],
  "backup": {
   "what": "same fuse",
   "seller": "element14 / Farnell",
   "price_usd": null
  },
  "specs": {
   "rating_a": 20,
   "voltage_v_dc": 58,
   "interrupt_a_at_58v": 1000
  },
  "sources": [
   "https://www.lcsc.com/product-detail/C207028.html",
   "https://nz.element14.com/littelfuse/0997020-wxn/auto-blade-fuse-2a-58v/dp/2748837"
  ]
 },
 {
  "id": "littelfuse-0997030",
  "key": "fuse_mini58_30a",
  "category": "fuse",
  "vendor": "Littelfuse",
  "model": "0997030.WXN",
  "name": "Littelfuse MINI 58V blade fuse 30 A (the VESC branches)",
  "price_usd": 0.44,
  "price_checked": "2026-10-27",
  "price_note": "LCSC: $0.44 each (10+: $0.35), read 2026-10-27",
  "buy": [
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C207030.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.44,
    "stock": "2,894",
    "seller_pn": "C207030"
   },
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C207029.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.49,
    "stock": "1,743 (25 A)",
    "seller_pn": "C207029"
   }
  ],
  "backup": {
   "what": "25 A of the same series (the VESC limit is set in firmware)",
   "seller": "LCSC",
   "price_usd": 0.49
  },
  "specs": {
   "rating_a": 30,
   "voltage_v_dc": 58
  },
  "sources": [
   "https://www.lcsc.com/product-detail/C207030.html",
   "https://www.lcsc.com/product-detail/C207029.html"
  ]
 },
 {
  "id": "littelfuse-0997010",
  "key": "fuse_mini58_10a",
  "category": "fuse",
  "vendor": "Littelfuse",
  "model": "0997010.WXN",
  "name": "Littelfuse MINI 58V blade fuse 10 A (DDR-120C-24 input, the charge port)",
  "price_usd": 0.41,
  "price_checked": "2026-10-27",
  "price_note": "LCSC: $0.41 each, read 2026-10-27",
  "buy": [
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C207026.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.41,
    "stock": "3,724",
    "seller_pn": "C207026"
   },
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C207027.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.66,
    "stock": "2,950 (15 A)",
    "seller_pn": "C207027"
   }
  ],
  "backup": {
   "what": "15 A of the same series",
   "seller": "LCSC",
   "price_usd": 0.66
  },
  "specs": {
   "rating_a": 10,
   "voltage_v_dc": 58
  },
  "sources": [
   "https://www.lcsc.com/product-detail/C207026.html",
   "https://www.lcsc.com/product-detail/C207027.html"
  ]
 },
 {
  "id": "littelfuse-0997005",
  "key": "fuse_mini58_5a",
  "category": "fuse",
  "vendor": "Littelfuse",
  "model": "0997005.WXN",
  "name": "Littelfuse MINI 58V blade fuse 5 A (DDR-60L-12 input; the 24 V J501 and turret branches)",
  "price_usd": 0.98,
  "price_checked": "2026-10-27",
  "price_note": "Farnell: $0.98 each, read 2026-10-27",
  "buy": [
   {
    "seller": "Farnell",
    "url": "https://il.farnell.com/littelfuse/0997005-wxn/auto-blade-fuse-5a-58v/dp/2748834",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "snippet",
    "price_usd": 0.98,
    "stock": "5,995 in stock, 10-14 business days from US stock (search result, 2026-10-27)"
   },
   {
    "seller": "Dasenic",
    "url": "https://www.dasenic.com/product/littelfuse-0997005wxn",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "snippet",
    "price_usd": 0.39,
    "stock": "17,902 in stock, $0.3878 at 25+ (search result, 2026-10-27)"
   }
  ],
  "backup": {
   "what": "same fuse",
   "seller": "Dasenic",
   "price_usd": 0.39
  },
  "specs": {
   "rating_a": 5,
   "voltage_v_dc": 58
  },
  "sources": [
   "https://il.farnell.com/littelfuse/0997005-wxn/auto-blade-fuse-5a-58v/dp/2748834",
   "https://www.dasenic.com/product/littelfuse-0997005wxn"
  ]
 },
 {
  "id": "bussmann-hhm",
  "key": "fuse_holder_mini_inline",
  "category": "fuse",
  "vendor": "Eaton Bussmann",
  "model": "HHM",
  "name": "Bussmann HHM inline MINI fuse holder, 2-30 A (rated 32 V DC: the 58 V fuse does the interrupting; label it \"58 V fuses only\")",
  "price_usd": 2.28,
  "price_checked": "2026-10-27",
  "price_note": "RockAuto: $2.28 each, read 2026-10-27",
  "buy": [
   {
    "seller": "RockAuto",
    "url": "https://www.rockauto.com/en/moreinfo.php?pk=1474944",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 2.28,
    "stock": "Add to Cart"
   },
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C3207515.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.3,
    "stock": "0 (Keystone 3570 PCB holder: the fuse-board upgrade)"
   }
  ],
  "backup": {
   "what": "Keystone 3568/3570 PCB MINI holders on a JLCPCB fuse board (P3)",
   "seller": "LCSC",
   "price_usd": 0.3
  },
  "specs": {
   "rating_v_dc": 32,
   "rating_a": 30
  },
  "sources": [
   "https://www.rockauto.com/en/moreinfo.php?pk=1474944",
   "https://www.lcsc.com/product-detail/C3207515.html"
  ]
 },
 {
  "id": "meanwell-ddr-60l-12",
  "key": "ddr60l_12",
  "category": "dc_dc",
  "vendor": "Mean Well",
  "model": "DDR-60L-12",
  "name": "Mean Well DDR-60L-12 DIN-rail DC-DC, 18-75 V in, 12 V 5 A, isolated",
  "price_usd": 34.2,
  "price_checked": "2026-10-27",
  "price_note": "Bravo Electro: $34.20 each, read 2026-10-27",
  "buy": [
   {
    "seller": "Bravo Electro",
    "url": "https://www.bravoelectro.com/ddr-60l-12.html",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 34.2,
    "stock": "listed (no quantity shown)"
   },
   {
    "seller": "TRC Electronics",
    "url": "https://www.trcelectronics.com/products/mean-well-ddr-60l-12",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 43.82,
    "stock": "40"
   }
  ],
  "backup": {
   "what": "same part",
   "seller": "TRC Electronics",
   "price_usd": 43.82
  },
  "specs": {
   "size_mm": [
    52.5,
    90,
    54.5
   ],
   "mass_g": 216,
   "input_v": [
    18,
    75
   ],
   "output": "12 V 5 A",
   "efficiency": 0.91
  },
  "sources": [
   "https://www.bravoelectro.com/ddr-60l-12.html",
   "https://www.trcelectronics.com/products/mean-well-ddr-60l-12"
  ]
 },
 {
  "id": "pololu-d36v28f5",
  "key": "buck_5v",
  "category": "dc_dc",
  "vendor": "Pololu",
  "model": "D36V28F5 (#3782)",
  "name": "Pololu 5 V 3.2 A step-down regulator D36V28F5 (from the 12 V rail)",
  "price_usd": 23.95,
  "price_checked": "2026-10-27",
  "price_note": "Pololu: $23.95 each, read 2026-10-27",
  "buy": [
   {
    "seller": "Pololu",
    "url": "https://www.pololu.com/product/3782",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 23.95,
    "stock": "Rationed (active and preferred)"
   },
   {
    "seller": "Pololu",
    "url": "https://www.pololu.com/product/2858",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 26.95,
    "stock": "Rationed; D24V22F5 5 V 2.5 A, 5.3-36 V in"
   }
  ],
  "backup": {
   "what": "D24V22F5 (5 V 2.5 A)",
   "seller": "Pololu",
   "price_usd": 26.95
  },
  "specs": {
   "size_mm": [
    17.8,
    20.3,
    8.8
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   "input_v": [
    5.3,
    50
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   "output": "5 V 3.2 A"
  },
  "sources": [
   "https://www.pololu.com/product/3782",
   "https://www.pololu.com/product/2858"
  ]
 },
 {
  "id": "blue-sea-150a-50mv-shunt",
  "key": "shunt_150a",
  "category": "sensor",
  "vendor": "Blue Sea Systems",
  "model": "analog meter shunt 150 A / 50 mV (UPC 632085092313)",
  "name": "Blue Sea meter shunt 150 A / 50 mV (manganin), in the battery negative",
  "price_usd": 48.74,
  "price_checked": "2026-10-27",
  "price_note": "go2marine: $48.74 each, read 2026-10-27",
  "buy": [
   {
    "seller": "go2marine",
    "url": "https://www.go2marine.com/products/analog-meter-shunt-150a-50mv",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 48.74,
    "stock": "available"
   },
   {
    "seller": "The Solar Store",
    "url": "https://www.thesolarstore.com/products/shunt-mkb-100-100-100amp-100mv-shunt",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 59.0,
    "stock": "available; Deltec MKB-100-100 (100 A / 100 mV)"
   }
  ],
  "backup": {
   "what": "Deltec MKB-100-100",
   "seller": "The Solar Store",
   "price_usd": 59.0
  },
  "specs": {
   "rating": "150 A / 50 mV",
   "continuous": "66 % of rating",
   "size_note": "not listed: the plate keeps an 85 x 30 x 25 envelope"
  },
  "sources": [
   "https://www.go2marine.com/products/analog-meter-shunt-150a-50mv",
   "https://www.thesolarstore.com/products/shunt-mkb-100-100-100amp-100mv-shunt"
  ]
 },
 {
  "id": "adafruit-ina228-5832",
  "key": "ina228",
  "category": "sensor",
  "vendor": "Adafruit",
  "model": "5832",
  "name": "Adafruit INA228 85 V 20-bit power monitor breakout (remove its 15 mOhm shunt; wire it to the external shunt)",
  "price_usd": 14.95,
  "price_checked": "2026-10-27",
  "price_note": "Adafruit: $14.95 each, read 2026-10-27",
  "buy": [
   {
    "seller": "Adafruit",
    "url": "https://www.adafruit.com/product/5832",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 14.95,
    "stock": "58 in stock"
   },
   {
    "seller": "Adafruit",
    "url": "https://www.adafruit.com/product/6349",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 10.95,
    "stock": "In stock; INA238 (16-bit), same board"
   }
  ],
  "backup": {
   "what": "INA238 breakout",
   "seller": "Adafruit",
   "price_usd": 10.95
  },
  "specs": {
   "size_mm": [
    25.8,
    20.2,
    10.1
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   "mass_g": 3.3
  },
  "sources": [
   "https://www.adafruit.com/product/5832",
   "https://www.adafruit.com/product/6349"
  ]
 },
 {
  "id": "victron-vbb115040020",
  "key": "busbar_victron_4p",
  "category": "busbar",
  "vendor": "Victron Energy",
  "model": "VBB115040020",
  "name": "Victron Busbar 150 A 4P with cover, 70 V DC, 4 x M6 studs (drop-in for a C110 bar)",
  "price_usd": 17.82,
  "price_checked": "2026-10-27",
  "price_note": "Portlandia Electric: $17.82 each, read 2026-10-27",
  "buy": [
   {
    "seller": "Portlandia Electric",
    "url": "https://www.portlandiaelectric.supply/products/victron-energy-vbb115040020",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 17.82,
    "stock": "available"
   },
   {
    "seller": "DRSA",
    "url": "https://www.drsa.com/products/victron-busbar-150a-4p-cover-4x-1-4-terminals-vbb115040020",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 20.4,
    "stock": "available"
   }
  ],
  "backup": {
   "what": "same part",
   "seller": "DRSA",
   "price_usd": 20.4
  },
  "specs": {
   "size_mm": [
    152.4,
    31.8,
    45
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   "mass_g": 200,
   "voltage_v_dc": 70,
   "studs": "4 x M6 (1/4 in)"
  },
  "sources": [
   "https://www.portlandiaelectric.supply/products/victron-energy-vbb115040020",
   "https://www.drsa.com/products/victron-busbar-150a-4p-cover-4x-1-4-terminals-vbb115040020"
  ]
 },
 {
  "id": "st-nucleo-g474re",
  "key": "nucleo_g474re",
  "category": "mcu",
  "vendor": "STMicroelectronics",
  "model": "NUCLEO-G474RE",
  "name": "ST Nucleo-64 NUCLEO-G474RE (the balance and power MCU: 3 FDCAN)",
  "price_usd": 19.9,
  "price_checked": "2026-10-27",
  "price_note": "ST eStore: $19.90 each, read 2026-10-27",
  "buy": [
   {
    "seller": "ST eStore",
    "url": "https://estore.st.com/en/nucleo-g474re-cpn.html",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 19.9,
    "stock": "In stock (1-2 per order)"
   },
   {
    "seller": "SparkFun",
    "url": "https://www.sparkfun.com/teensy-4-1.html",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 31.5,
    "stock": "In stock; Teensy 4.1 (3 CAN) as the backup MCU"
   }
  ],
  "backup": {
   "what": "Teensy 4.1",
   "seller": "SparkFun",
   "price_usd": 31.5
  },
  "specs": {
   "can": 3
  },
  "sources": [
   "https://estore.st.com/en/nucleo-g474re-cpn.html",
   "https://www.sparkfun.com/teensy-4-1.html"
  ]
 },
 {
  "id": "adafruit-can-pal-5708",
  "key": "can_pal",
  "category": "can",
  "vendor": "Adafruit",
  "model": "5708",
  "name": "Adafruit CAN Pal (TJA1051T/3) CAN transceiver, switchable 120 Ohm",
  "price_usd": 3.95,
  "price_checked": "2026-10-27",
  "price_note": "Adafruit: $3.95 each, read 2026-10-27",
  "buy": [
   {
    "seller": "Adafruit",
    "url": "https://www.adafruit.com/product/5708",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 3.95,
    "stock": "In stock"
   },
   {
    "seller": "Waveshare",
    "url": "https://www.waveshare.com/sn65hvd230-can-board.htm",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 4.99,
    "stock": "InStock; SN65HVD230 board"
   }
  ],
  "backup": {
   "what": "Waveshare SN65HVD230 board",
   "seller": "Waveshare",
   "price_usd": 4.99
  },
  "specs": {
   "pcb_mm": [
    20.3,
    20.3
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  },
  "sources": [
   "https://www.adafruit.com/product/5708",
   "https://www.waveshare.com/sn65hvd230-can-board.htm"
  ]
 },
 {
  "id": "bntechgo-8awg-black-10ft",
  "key": "wire_8awg",
  "category": "wire",
  "vendor": "BNTECHGO",
  "model": "8 AWG silicone black 10 ft",
  "name": "BNTECHGO 8 AWG silicone wire, black, 10 ft (the pack leads, the MRBF, the shunt, the switch, the bus bars; red heat-shrink on every + end)",
  "price_usd": 17.98,
  "price_checked": "2026-10-27",
  "price_note": "BNTECHGO: $17.98 each, read 2026-10-27",
  "buy": [
   {
    "seller": "BNTECHGO",
    "url": "https://bntechgo.com/bntechgo-8-gauge-silicone-wire-black-10-feet-ultra-flexible-high-temp-200-c-600v-8-awg-silicone-rubber-wire-with-1650-strands-of-tinned-copper-wire-stranded-wire-for-model-battery/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 17.98,
    "stock": "not shown"
   },
   {
    "seller": "BNTECHGO",
    "url": "https://bntechgo.com/bntechgo-10-gauge-silicone-wire-spool-black-25-feet-ultra-flexible-high-temp-200-c-600v-10-awg-silicone-rubber-wire-with-1050-strands-of-tinned-copper-wire-stranded-wire-for-model-battery/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 24.98,
    "stock": "not shown; 10 AWG 25 ft: carries the 80 A pulses, 55 A continuous (the MCU then caps the bus at 50 A)"
   }
  ],
  "backup": {
   "what": "10 AWG with a 50 A continuous cap in firmware",
   "seller": "BNTECHGO",
   "price_usd": 24.98
  },
  "specs": {
   "awg": 8,
   "strands": 1650
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  "sources": [
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   "https://bntechgo.com/bntechgo-10-gauge-silicone-wire-spool-black-25-feet-ultra-flexible-high-temp-200-c-600v-10-awg-silicone-rubber-wire-with-1050-strands-of-tinned-copper-wire-stranded-wire-for-model-battery/"
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 },
 {
  "id": "bntechgo-12awg-rb",
  "key": "wire_12awg",
  "category": "wire",
  "vendor": "BNTECHGO",
  "model": "12 AWG silicone red + black 25 + 25 ft",
  "name": "BNTECHGO 12 AWG silicone wire, red and black (VESC leads)",
  "price_usd": 32.98,
  "price_checked": "2026-10-27",
  "price_note": "BNTECHGO: $32.98 each, read 2026-10-27",
  "buy": [
   {
    "seller": "BNTECHGO",
    "url": "https://bntechgo.com/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 32.98,
    "stock": "not shown"
   },
   {
    "seller": "RaceDayQuads",
    "url": "https://www.racedayquads.com/products/silicone-wire-2-ft-red-and-black-pair",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 2.99,
    "stock": "12 AWG sold out on 2026-10-27; 16/18/20 AWG in stock"
   }
  ],
  "backup": {
   "what": "1 ft pairs",
   "seller": "RaceDayQuads",
   "price_usd": 2.99
  },
  "specs": {
   "awg": 12
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  "sources": [
   "https://bntechgo.com/",
   "https://www.racedayquads.com/products/silicone-wire-2-ft-red-and-black-pair"
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 },
 {
  "id": "bntechgo-14awg-rb",
  "key": "wire_14awg",
  "category": "wire",
  "vendor": "BNTECHGO",
  "model": "14 AWG silicone red + black 25 + 25 ft",
  "name": "BNTECHGO 14 AWG silicone wire, red and black (RS-04 branches)",
  "price_usd": 24.98,
  "price_checked": "2026-10-27",
  "price_note": "BNTECHGO: $24.98 each, read 2026-10-27",
  "buy": [
   {
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    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 24.98,
    "stock": "not shown"
   },
   {
    "seller": "RaceDayQuads",
    "url": "https://www.racedayquads.com/products/silicone-wire-2-ft-red-and-black-pair",
    "in_stock": true,
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    "read_on": "2026-10-27",
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    "price_usd": 2.99,
    "stock": "14 AWG sold out on 2026-10-27"
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  ],
  "backup": {
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   "price_usd": 2.99
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  "specs": {
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  "sources": [
   "https://bntechgo.com/",
   "https://www.racedayquads.com/products/silicone-wire-2-ft-red-and-black-pair"
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 {
  "id": "bntechgo-18awg-rb",
  "key": "wire_18awg",
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  "vendor": "BNTECHGO",
  "model": "18 AWG silicone red + black 10 + 10 ft",
  "name": "BNTECHGO 18 AWG silicone wire, red and black (converters, 24 V and 12 V)",
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  "price_checked": "2026-10-27",
  "price_note": "BNTECHGO: $9.48 each, read 2026-10-27",
  "buy": [
   {
    "seller": "BNTECHGO",
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    "ships_from": "US",
    "read_on": "2026-10-27",
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    "price_usd": 9.48,
    "stock": "not shown"
   },
   {
    "seller": "RaceDayQuads",
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    "in_stock": true,
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    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 1.99,
    "stock": "18 AWG in stock"
   }
  ],
  "backup": {
   "what": "1 ft pairs",
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   "price_usd": 1.99
  },
  "specs": {
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   "https://www.racedayquads.com/products/silicone-wire-2-ft-red-and-black-pair"
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 {
  "id": "bntechgo-22awg-rb",
  "key": "wire_22awg",
  "category": "wire",
  "vendor": "BNTECHGO",
  "model": "22 AWG silicone red + black 25 + 25 ft",
  "name": "BNTECHGO 22 AWG silicone wire, red and black (5 V, signals; twist the CAN pairs by hand)",
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  "price_checked": "2026-10-27",
  "price_note": "BNTECHGO: $11.48 each, read 2026-10-27",
  "buy": [
   {
    "seller": "BNTECHGO",
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    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 11.48,
    "stock": "not shown"
   },
   {
    "seller": "RaceDayQuads",
    "url": "https://www.racedayquads.com/products/silicone-wire-2-ft-red-and-black-pair",
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    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 1.99,
    "stock": "22 AWG sold out on 2026-10-27; 20 AWG in stock"
   }
  ],
  "backup": {
   "what": "20 AWG 1 ft pairs",
   "seller": "RaceDayQuads",
   "price_usd": 1.99
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  "specs": {
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  "sources": [
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   "https://www.racedayquads.com/products/silicone-wire-2-ft-red-and-black-pair"
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 },
 {
  "id": "selterm-md0814p-10",
  "key": "lug_8awg_m6",
  "category": "terminal",
  "vendor": "Selterm",
  "model": "MD0814P",
  "name": "Selterm tinned copper lug 8 AWG, 1/4 in (M6) stud, 10 pcs (crimped on 10 AWG with a sleeve)",
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  "price_checked": "2026-10-27",
  "pack_qty": 10,
  "pack_price_usd": 15.01,
  "price_note": "Selterm: $15.01 per 10-pack, read 2026-10-27",
  "buy": [
   {
    "seller": "Selterm",
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    "in_stock": true,
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    "read_on": "2026-10-27",
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    "price_usd": 15.01,
    "pack_qty": 10,
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   },
   {
    "seller": "go2marine",
    "url": "https://www.go2marine.com/products/ring-terminals-adhesive-lined-heat-shrink-ancor",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 4.95,
    "pack_qty": 3,
    "stock": "available; Ancor adhesive heat-shrink rings 12-10 AWG M6"
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  ],
  "backup": {
   "what": "Ancor 12-10 AWG M6 rings",
   "seller": "go2marine",
   "price_usd": 4.95
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  "specs": {},
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 {
  "id": "selterm-md0856p-10",
  "key": "lug_8awg_m8",
  "category": "terminal",
  "vendor": "Selterm",
  "model": "MD0856P",
  "name": "Selterm tinned copper lug 8 AWG, 5/16 in (M8) stud, 10 pcs (the MRBF block)",
  "price_usd": 1.615,
  "price_checked": "2026-10-27",
  "pack_qty": 10,
  "pack_price_usd": 16.15,
  "price_note": "Selterm: $16.15 per 10-pack, read 2026-10-27",
  "buy": [
   {
    "seller": "Selterm",
    "url": "https://selterm.com/products/8-awg-5-16-stud-tinned-copper-battery-cable-ends-wire-lugs-marine-grade-md0856p",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 16.15,
    "pack_qty": 10,
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   },
   {
    "seller": "go2marine",
    "url": "https://www.go2marine.com/products/ring-terminals-adhesive-lined-heat-shrink-ancor",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 4.95,
    "pack_qty": 3,
    "stock": "available; Ancor 12-10 AWG M8"
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  "backup": {
   "what": "Ancor 12-10 AWG M8 rings",
   "seller": "go2marine",
   "price_usd": 4.95
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  "specs": {},
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 {
  "id": "amass-xt30u-m-8",
  "key": "xt30_m",
  "category": "connector",
  "vendor": "Amass",
  "model": "XT30U-M 8-pack",
  "name": "Amass XT30U male, 8-pack (the devices' end: the J501 and lidar box adapter leads; D58)",
  "price_usd": 0.3738,
  "price_checked": "2026-10-27",
  "pack_qty": 8,
  "pack_price_usd": 2.99,
  "price_note": "Pyrodrone: $2.99 per 8-pack, read 2026-10-27",
  "buy": [
   {
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    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 2.99,
    "pack_qty": 8,
    "stock": "available"
   },
   {
    "seller": "RaceDayQuads",
    "url": "https://www.racedayquads.com/products/xt30-connector-male-or-female",
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    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.99,
    "stock": "available (single)"
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  ],
  "backup": {
   "what": "single",
   "seller": "RaceDayQuads",
   "price_usd": 0.99
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  "specs": {},
  "sources": [
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 {
  "id": "amass-xt30u-f-8",
  "key": "xt30_f",
  "category": "connector",
  "vendor": "Amass",
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  "name": "Amass XT30U female, 8-pack (the robot's live ends: the 24 V and 12 V branch leads; D58)",
  "price_usd": 0.3738,
  "price_checked": "2026-10-27",
  "pack_qty": 8,
  "pack_price_usd": 2.99,
  "price_note": "Pyrodrone: $2.99 per 8-pack, read 2026-10-27",
  "buy": [
   {
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    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 2.99,
    "pack_qty": 8,
    "stock": "available"
   },
   {
    "seller": "RaceDayQuads",
    "url": "https://www.racedayquads.com/products/xt30-connector-male-or-female",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.99,
    "stock": "available (single)"
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  ],
  "backup": {
   "what": "single",
   "seller": "RaceDayQuads",
   "price_usd": 0.99
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  "specs": {},
  "sources": [
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 {
  "id": "amass-xt60h-m-5",
  "key": "xt60h_m",
  "category": "connector",
  "vendor": "Amass",
  "model": "XT60H-M 5-pack",
  "name": "Amass XT60H male, 5-pack (the devices' end: the VESC leads; D58)",
  "price_usd": 0.798,
  "price_checked": "2026-10-27",
  "pack_qty": 5,
  "pack_price_usd": 3.99,
  "price_note": "Pyrodrone: $3.99 per 5-pack, read 2026-10-27",
  "buy": [
   {
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    "ships_from": "US",
    "read_on": "2026-10-27",
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    "price_usd": 3.99,
    "pack_qty": 5,
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   {
    "seller": "RaceDayQuads",
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    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.99,
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  "backup": {
   "what": "single",
   "seller": "RaceDayQuads",
   "price_usd": 0.99
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 {
  "id": "jst-aghgh28k305",
  "key": "gh_lead_2p_300",
  "category": "connector",
  "vendor": "JST",
  "model": "AGHGH28K305",
  "name": "JST GH 1.25 pre-crimped lead, socket to socket, 300 mm (CAN, UART)",
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  "price_checked": "2026-10-27",
  "price_note": "TLC Electronics: $0.52 each, read 2026-10-27",
  "buy": [
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    "read_on": "2026-10-27",
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    "seller": "TLC Electronics",
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    "ships_from": "US",
    "read_on": "2026-10-27",
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 {
  "id": "haisstronica-hx1574",
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  "price_checked": "2026-10-27",
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    "ships_from": "US",
    "read_on": "2026-10-27",
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   {
    "seller": "Haisstronica",
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    "ships_from": "US",
    "read_on": "2026-10-27",
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  "backup": {
   "what": "with the 5000-ferrule kit",
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 {
  "id": "haisstronica-ferrules-5000",
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   {
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    "ships_from": "US",
    "read_on": "2026-10-27",
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    "ships_from": "US",
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  "backup": {
   "what": "tool + kit",
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  "id": "glitter-801d",
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  "price_checked": "2026-10-27",
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  "buy": [
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    "seller": "Grid Rewired",
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 {
  "id": "mcmaster-91239a228",
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    "seller": "McMaster-Carr",
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 {
  "id": "mcmaster-91239a224",
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   {
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   {
    "seller": "McMaster-Carr",
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   "seller": "McMaster-Carr",
   "part_number": "91239A228",
   "price_usd": 12.06
  },
  "specs": {
   "thread": "M5",
   "length_mm": 10,
   "head_d_mm": 9.5,
   "drive": "3 mm hex",
   "class": "10.9"
  },
  "sources": [
   "https://www.mcmaster.com/91239A224/",
   "https://www.mcmaster.com/91239A228/"
  ]
 },
 {
  "id": "mcmaster-91294a190",
  "key": "screw_m4x10_flat",
  "category": "fastener",
  "vendor": "McMaster-Carr",
  "model": "91294A190",
  "name": "Black-oxide alloy steel flat head hex drive screw, 90 deg, M4 x 0.7 x 10 mm (the spine standoffs, flush on the frame side)",
  "price_usd": 0.0638,
  "price_checked": "2026-10-27",
  "pack_qty": 100,
  "pack_price_usd": 6.38,
  "price_note": "McMaster-Carr: $6.38 per 100-pack (read 2026-10-27; price_usd is per piece)",
  "buy": [
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/91294A190/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 6.38,
    "pack_qty": 100,
    "stock": "product page read (McMaster ships next day)",
    "seller_pn": "91294A190"
   },
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/91294A188/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 6.25,
    "pack_qty": 100,
    "stock": "M4 x 8 of the same series (engages 3.3 mm in the standoff)",
    "seller_pn": "91294A188"
   }
  ],
  "backup": {
   "what": "M4 x 8 of the same series (engages 3.3 mm in the standoff)",
   "seller": "McMaster-Carr",
   "part_number": "91294A188",
   "price_usd": 6.25
  },
  "specs": {
   "thread": "M4",
   "length_mm": 10,
   "head_d_mm": 8.0,
   "drive": "2.5 mm hex"
  },
  "sources": [
   "https://www.mcmaster.com/91294A190/",
   "https://www.mcmaster.com/91294A188/"
  ]
 },
 {
  "id": "mcmaster-95947a065",
  "key": "standoff_m4x31_ff",
  "category": "standoff",
  "vendor": "McMaster-Carr",
  "model": "95947A065",
  "name": "Lightweight aluminium female-threaded hex standoff, 6 mm hex, M4 x 31 mm (the spine: between the cheeks)",
  "price_usd": 1.46,
  "price_checked": "2026-10-27",
  "price_note": "McMaster-Carr: $1.46 each (read 2026-10-27; price_usd is per piece)",
  "buy": [
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/95947A065/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 1.46,
    "stock": "product page read (McMaster ships next day)",
    "seller_pn": "95947A065"
   },
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/95947A062/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 1.35,
    "stock": "M4 x 30 of the same series, with a printed 1 mm washer at one end",
    "seller_pn": "95947A062"
   }
  ],
  "backup": {
   "what": "M4 x 30 of the same series, with a printed 1 mm washer at one end",
   "seller": "McMaster-Carr",
   "part_number": "95947A062",
   "price_usd": 1.35
  },
  "specs": {
   "thread": "M4",
   "length_mm": 31,
   "hex_mm": 6
  },
  "sources": [
   "https://www.mcmaster.com/95947A065/",
   "https://www.mcmaster.com/95947A062/"
  ]
 },
 {
  "id": "mcmaster-91290a113",
  "key": "screw_m3x8_socket",
  "category": "fastener",
  "vendor": "McMaster-Carr",
  "model": "91290A113",
  "name": "Black-oxide alloy steel socket head screw, M3 x 0.5 x 8 mm (the bus bars to their insulators, the insulators to the plate)",
  "price_usd": 0.1328,
  "price_checked": "2026-10-27",
  "pack_qty": 100,
  "pack_price_usd": 13.28,
  "price_note": "McMaster-Carr: $13.28 per 100-pack (read 2026-10-27; price_usd is per piece)",
  "buy": [
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/91290A113/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 13.28,
    "pack_qty": 100,
    "stock": "product page read (McMaster ships next day)",
    "seller_pn": "91290A113"
   },
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/91290A115/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 13.23,
    "pack_qty": 100,
    "stock": "M3 x 10 of the same series",
    "seller_pn": "91290A115"
   }
  ],
  "backup": {
   "what": "M3 x 10 of the same series",
   "seller": "McMaster-Carr",
   "part_number": "91290A115",
   "price_usd": 13.23
  },
  "specs": {
   "thread": "M3",
   "length_mm": 8
  },
  "sources": [
   "https://www.mcmaster.com/91290A113/",
   "https://www.mcmaster.com/91290A115/"
  ]
 },
 {
  "id": "mcmaster-95947a048",
  "key": "standoff_m3x16_ff",
  "category": "standoff",
  "vendor": "McMaster-Carr",
  "model": "95947A048",
  "name": "Lightweight aluminium female-threaded hex standoff, 6 mm hex, M3 x 16 mm (the J501 carrier on the pallet)",
  "price_usd": 0.81,
  "price_checked": "2026-10-27",
  "price_note": "McMaster-Carr: $0.81 each (read 2026-10-27; price_usd is per piece)",
  "buy": [
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/95947A048/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.81,
    "stock": "product page read (McMaster ships next day)",
    "seller_pn": "95947A048"
   },
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/95947A051/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.81,
    "stock": "M3 x 19 of the same series (the carrier 3 mm higher)",
    "seller_pn": "95947A051"
   }
  ],
  "backup": {
   "what": "M3 x 19 of the same series (the carrier 3 mm higher)",
   "seller": "McMaster-Carr",
   "part_number": "95947A051",
   "price_usd": 0.81
  },
  "specs": {
   "thread": "M3",
   "length_mm": 16,
   "hex_mm": 6
  },
  "sources": [
   "https://www.mcmaster.com/95947A048/",
   "https://www.mcmaster.com/95947A051/"
  ]
 },
 {
  "id": "adafruit-qt-py-esp32-s3-5426",
  "key": "qtpy_esp32s3",
  "category": "mcu",
  "vendor": "Adafruit",
  "model": "5426",
  "name": "Adafruit QT Py ESP32-S3 (reads the Daly BMS over Bluetooth and puts it on CAN bus C: no wire to the BMS, whose UART ground is B-)",
  "price_usd": 12.5,
  "price_checked": "2026-10-27",
  "price_note": "Adafruit: $12.50 each, read 2026-10-27",
  "buy": [
   {
    "seller": "Adafruit",
    "url": "https://www.adafruit.com/product/5426",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 12.5,
    "stock": "In stock"
   },
   {
    "seller": "Waveshare",
    "url": "https://www.waveshare.com/esp32-s3-zero.htm",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "plan",
    "price_usd": 5.49,
    "stock": "listed $5.49-7.99 (the body plan, 2026-10-27)"
   }
  ],
  "backup": {
   "what": "Waveshare ESP32-S3-Zero",
   "seller": "Waveshare",
   "price_usd": 5.49
  },
  "specs": {
   "size_mm": [
    21.7,
    17.8,
    5.7
   ],
   "mass_g": 1.2
  },
  "sources": [
   "https://www.adafruit.com/product/5426",
   "https://www.waveshare.com/esp32-s3-zero.htm"
  ]
 },
 {
  "id": "radiomaster-er3c-i",
  "key": "radio_stop_rx",
  "category": "radio",
  "vendor": "RadioMaster",
  "model": "ER3C-i 2.4 GHz ELRS PWM",
  "name": "RadioMaster ER3C-i ExpressLRS 2.4 GHz PWM receiver (the radio stop, D37: one PWM channel drives the RC relay switch)",
  "price_usd": 16.99,
  "price_checked": "2026-10-27",
  "price_note": "RadioMaster: $16.99 each, read 2026-10-27",
  "buy": [
   {
    "seller": "RadioMaster",
    "url": "https://radiomasterrc.com/products/er3c-i-2-4ghz-elrs-pwm-receiver",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 16.99,
    "stock": "available (store JSON)"
   },
   {
    "seller": "RadioMaster",
    "url": "https://radiomasterrc.com/products/rp1-expresslrs-2-4ghz-nano-receiver",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 18.99,
    "stock": "available; RP1 V2 nano, PWM on its UART pads (ELRS 3 setting)"
   }
  ],
  "backup": {
   "what": "RP1 V2 with PWM output",
   "seller": "RadioMaster",
   "price_usd": 18.99
  },
  "specs": {
   "protocol": "ExpressLRS 2.4 GHz",
   "output": "PWM x 3"
  },
  "sources": [
   "https://radiomasterrc.com/products/er3c-i-2-4ghz-elrs-pwm-receiver",
   "https://radiomasterrc.com/products/rp1-expresslrs-2-4ghz-nano-receiver"
  ]
 },
 {
  "id": "omron-g2rl-2-dc12",
  "key": "stop_relay_dpdt",
  "category": "relay",
  "vendor": "Omron",
  "model": "G2RL-2-DC12",
  "name": "Omron G2RL-2 DC12 power relay, DPDT, 12 V coil, 8 A at 30 V DC (the stop relay: the turret's safety loop and its 24 V branch)",
  "price_usd": 4.14,
  "price_checked": "2026-10-27",
  "price_note": "DigiKey: $4.14 each, read 2026-10-27",
  "buy": [
   {
    "seller": "DigiKey",
    "url": "https://www.digikey.com/en/products/detail/omron-electronics-inc-emc-div/G2RL-2-DC12/368870",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "snippet",
    "price_usd": 4.14,
    "stock": "1,078 immediate (search result, 2026-10-27; the live page to confirm)"
   },
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C61458.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "stock": "listed as C61458 (price shown on the live page)"
   }
  ],
  "backup": {
   "what": "same relay",
   "seller": "LCSC",
   "price_usd": null
  },
  "specs": {
   "contacts": "DPDT (2 Form C)",
   "rating": "8 A at 30 V DC",
   "coil": "12 V DC",
   "size_mm": [
    28.8,
    12.5,
    15.7
   ]
  },
  "sources": [
   "https://www.digikey.com/en/products/detail/omron-electronics-inc-emc-div/G2RL-2-DC12/368870",
   "https://www.lcsc.com/product-detail/C61458.html"
  ]
 },
 {
  "id": "pololu-rc-switch-relay-2804",
  "key": "radio_stop_relay",
  "category": "radio",
  "vendor": "Pololu",
  "model": "2804",
  "name": "Pololu RC switch with relay (the radio stop: its dry contact is the STOP loop to the MCU; D37 calls this the simplest non-rated version)",
  "price_usd": 19.95,
  "price_checked": "2026-10-27",
  "price_note": "Pololu: $19.95 each, read 2026-10-27",
  "buy": [
   {
    "seller": "Pololu",
    "url": "https://www.pololu.com/product/2804",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "plan",
    "price_usd": 19.95,
    "stock": "listed (the body plan, read 2026-10-27)"
   },
   {
    "seller": "Pololu",
    "url": "https://www.pololu.com/product/2803",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "plan",
    "stock": "the digital-output version (no relay): backup through a MOSFET on the MCU board"
   }
  ],
  "backup": {
   "what": "Pololu RC switch, digital output (#2803)",
   "seller": "Pololu",
   "price_usd": null
  },
  "specs": {},
  "sources": [
   "https://www.pololu.com/product/2804",
   "https://www.pololu.com/product/2803"
  ]
 },
 {
  "id": "mcmaster-91290a120",
  "key": "screw_m3x16",
  "category": "fastener",
  "vendor": "McMaster-Carr",
  "model": "91290A120",
  "name": "Black-Oxide Alloy Steel Socket Head Screw, M3 x 0.5 x 16 mm (the P3 shell: walls and faces into the posts' inserts, the door, hatch and splices)",
  "price_usd": 0.1222,
  "price_checked": "2026-10-27",
  "pack_qty": 100,
  "pack_price_usd": 12.22,
  "price_note": "McMaster-Carr: $12.22 per 100-pack (read 2026-10-27, one product page; price_usd is per piece)",
  "buy": [
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/91290A120/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 12.22,
    "pack_qty": 100,
    "stock": "product page read (McMaster ships next day)",
    "seller_pn": "91290A120"
   },
   {
    "seller": "Belmetric",
    "url": "https://belmetric.com/m3x0-5-socket-head-cap-screw-din-912-class-12-9/",
    "price_usd": 0.16,
    "seller_pn": "BSH3X16",
    "read_on": "2026-10-27",
    "stock": "in stock: DIN 912 12.9 black, the same screw; $0.10 each from 25"
   }
  ],
  "backup": {
   "what": "in stock: DIN 912 12.9 black, the same screw; $0.10 each from 25",
   "seller": "Belmetric",
   "part_number": "BSH3X16",
   "price_usd": 0.16
  },
  "specs": {
   "thread": "M3",
   "length_mm": 16,
   "head_d_mm": 5.5,
   "mass_g": 1.6
  },
  "sources": [
   "https://www.mcmaster.com/91290A120/",
   "https://belmetric.com/m3x0-5-socket-head-cap-screw-din-912-class-12-9/"
  ]
 },
 {
  "id": "mcmaster-90592a085",
  "key": "nut_m3",
  "category": "fastener",
  "vendor": "McMaster-Carr",
  "model": "90592A085",
  "name": "Steel Hex Nut, Medium-Strength, Class 8, M3 x 0.5 mm (held in the P3 shell's nut pads)",
  "price_usd": 0.0294,
  "price_checked": "2026-10-27",
  "pack_qty": 100,
  "pack_price_usd": 2.94,
  "price_note": "McMaster-Carr: $2.94 per 100-pack (read 2026-10-27, one product page; price_usd is per piece)",
  "buy": [
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/90592A085/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 2.94,
    "pack_qty": 100,
    "stock": "product page read (McMaster ships next day)",
    "seller_pn": "90592A085"
   },
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/91828A211/",
    "price_usd": 5.68,
    "pack_qty": 100,
    "seller_pn": "91828A211",
    "read_on": "2026-10-27",
    "stock": "18-8 stainless M3 hex nut, the same size"
   }
  ],
  "backup": {
   "what": "18-8 stainless M3 hex nut, the same size",
   "seller": "McMaster-Carr",
   "part_number": "91828A211",
   "price_usd": 5.68
  },
  "specs": {
   "thread": "M3",
   "width_mm": 5.5,
   "height_mm": 2.4,
   "mass_g": 0.4
  },
  "sources": [
   "https://www.mcmaster.com/90592A085/",
   "https://www.mcmaster.com/91828A211/"
  ]
 },
 {
  "id": "gyropup-fuse-board-jlcpcb",
  "key": "fuse_board_pcb",
  "category": "fab_service",
  "vendor": "JLCPCB",
  "model": "Gyropup fuse board rev A (hardware/fuse-board)",
  "name": "Gyropup fuse board PCB, rev A: 88 x 76 mm, 2 layers, 2 oz outer copper, 1.6 mm FR-4, lead-free HASL (made to order from hardware/fuse-board/fab/fuse-board-gerbers.zip)",
  "price_usd": 8.12,
  "price_checked": "2026-10-27",
  "pack_qty": 5,
  "pack_price_usd": 40.6,
  "price_note": "JLCPCB instant price read 2026-10-27 from the uploaded gerber zip (hardware/fuse-board/jlcpcb_quote.py, fab/jlcpcb-price.json): $40.60 for 5 boards ($35.30 of it the 2 oz copper, $1.30 lead-free HASL), $8.12 a board; DHL estimate $31.49, 3 days' build. Assembly (optional, the 7 SMD parts of fab/bom-jlcpcb.csv): about $31 for 2 boards from JLCPCB's published Economic PCBA fees ($8.18 setup, $1.53 stencil, $3.07 per extended part) - an estimate: its BOM step needs a sign-in",
  "buy": [
   {
    "seller": "JLCPCB",
    "url": "https://cart.jlcpcb.com/quote",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 40.6,
    "pack_qty": 5,
    "stock": "made to order (5 pieces, 3 days)",
    "detected": "2 layer board of 76x88mm"
   },
   {
    "seller": "JLCPCB (JLCONE desktop app)",
    "url": "https://cart.jlcpcb.com/quote",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 38.6,
    "pack_qty": 5,
    "stock": "made to order (the same order placed from the desktop app)"
   }
  ],
  "backup": {
   "what": "the same zip at PCBWay (instant price on upload; not read)",
   "seller": "PCBWay",
   "price_usd": null
  },
  "specs": {
   "size_mm": [
    88.0,
    76.0,
    1.6
   ],
   "layers": 2,
   "copper_oz": 2,
   "finish": "lead-free HASL",
   "drc": "clean against JLCPCB 2 oz rules (hardware/fuse-board/reports/drc.rpt)"
  },
  "sources": [
   "https://cart.jlcpcb.com/quote",
   "https://jlcpcb.com/capabilities/pcb-capabilities",
   "https://jlcpcb.com/help/article/pcb-assembly-price"
  ]
 },
 {
  "id": "littelfuse-178-6764-0001",
  "key": "fuse_holder_mini_pcb",
  "category": "fuse",
  "vendor": "Littelfuse",
  "model": "178.6764.0001 (MINI FL1)",
  "name": "Littelfuse MINI FL1 PCB fuse holder for MINI blade fuses: 58 V DC, 22 A continuous, fuses to 30 A (the fuse board's twelve holders)",
  "price_usd": 1.67,
  "price_checked": "2026-10-27",
  "price_note": "LCSC: $1.94 each, $1.67 at 10+ (we buy 14), read 2026-10-27; TME $4.56",
  "buy": [
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C142933.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 1.67,
    "stock": "4,665",
    "seller_pn": "C142933"
   },
   {
    "seller": "TME",
    "url": "https://www.tme.com/us/en-us/details/178.6764.0001/car-fuseholders/littelfuse/",
    "in_stock": true,
    "ships_from": "PL",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 4.56,
    "stock": "599 in TME stock"
   }
  ],
  "backup": {
   "what": "same part",
   "seller": "TME",
   "price_usd": 4.56
  },
  "specs": {
   "voltage_v_dc": 58,
   "continuous_a": 22,
   "fuse_max_a": 30,
   "contact_temp_max_c": 130,
   "body_mm": [
    14.2,
    6.0,
    15.6
   ],
   "pins": "2 terminals 8 mm apart in 1.5 mm holes; a snap-in peg in a 2.7 mm hole 0.8 mm off their line",
   "datasheet_voltage_note": "Littelfuse's page (2026-10-27) says 58 V DC max; its 2016 datasheet (rev 111616) says 125 V; LCSC's text says 32 V",
   "versus_keystone_3568": "Keystone 3568: 20 A at 500 V AC, no DC rating (Keystone catalogs M55 and M60); too small for the 30 A VESC branches"
  },
  "sources": [
   "https://www.littelfuse.com/products/fuses-overcurrent-protection/fuse-holders-fuse-blocks-accessories/fuse-holders/in-line-fuse-holders/mini-fl1/178-6764-0001",
   "https://www.mouser.com/datasheet/2/240/Littelfuse_Fuseholder_MINI_FL1_PCB_Mount-2584333.pdf",
   "https://www.lcsc.com/product-detail/C142933.html"
  ]
 },
 {
  "id": "bourns-css2h-3920r-1l00f",
  "key": "shunt_1mohm_3920",
  "category": "sensor",
  "vendor": "Bourns",
  "model": "CSS2H-3920R-1L00F",
  "name": "Bourns CSS2H-3920 current-sense resistor 1 mOhm 1 %, 8 W at 70 C terminals, 3920 metal strip (the fuse board's high-side shunt)",
  "price_usd": 0.783,
  "price_checked": "2026-10-27",
  "price_note": "LCSC: $0.783 each, read 2026-10-27",
  "buy": [
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C4087295.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.783,
    "stock": "511",
    "seller_pn": "C4087295"
   },
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C1848566.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 1.4964,
    "stock": "5 (CSS2H-3920R-1L00FE, the 7 in reel)",
    "seller_pn": "C1848566"
   }
  ],
  "backup": {
   "what": "CSS2H-3920R-1L00FE (same part, small reel)",
   "seller": "LCSC",
   "price_usd": 1.4964
  },
  "specs": {
   "r_mohm": 1.0,
   "tolerance_pct": 1.0,
   "power_w_at_70c_terminal": 8.0,
   "tcr_ppm_c_with_cu_terminals": 100,
   "tcr_ppm_c_alloy": 50,
   "short_time_overload": "5 x rated power for 5 s",
   "size_mm": [
    10.0,
    5.2
   ],
   "pads_mm": "3.40 x 6.20 at +-3.80 (Bourns' layout)",
   "kelvin": "sense at Bourns' measurement points, 8.40 mm apart"
  },
  "sources": [
   "https://www.bourns.com/data/global/pdfs/CSS2H-3920.pdf",
   "https://www.lcsc.com/product-detail/C4087295.html"
  ]
 },
 {
  "id": "ti-ina228aidgsr",
  "key": "ina228_ic",
  "category": "sensor",
  "vendor": "Texas Instruments",
  "model": "INA228AIDGSR",
  "name": "TI INA228 85 V 20-bit power monitor, VSSOP-10 (optional U1 on the fuse board; the Adafruit 5832 is the default)",
  "price_usd": 6.4168,
  "price_checked": "2026-10-27",
  "price_note": "LCSC: $6.42, 0 in stock on 2026-10-27 (hence the Adafruit 5832 as the default)",
  "buy": [
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C2887910.html",
    "in_stock": false,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 6.4168,
    "stock": "0 in stock (2026-10-27)",
    "seller_pn": "C2887910"
   },
   {
    "seller": "Adafruit",
    "url": "https://www.adafruit.com/product/5832",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 14.95,
    "stock": "58 in stock (the breakout, catalogue key ina228)"
   }
  ],
  "backup": {
   "what": "the Adafruit 5832 breakout wired to TP1-TP3",
   "seller": "Adafruit",
   "price_usd": 14.95
  },
  "specs": {
   "common_mode_v": [
    -0.3,
    85
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   "gain_error_pct_max": 0.05,
   "offset_uv_max": 1.0,
   "gain_drift_ppm_c": 20,
   "cmrr_db_min": 154
  },
  "sources": [
   "https://www.ti.com/lit/ds/symlink/ina228.pdf",
   "https://www.lcsc.com/product-detail/C2887910.html"
  ]
 },
 {
  "id": "jst-sm04b-ghs-tb",
  "key": "gh_header_4p_smd",
  "category": "connector",
  "vendor": "JST",
  "model": "SM04B-GHS-TB(LF)(SN)",
  "name": "JST GH 1.25 mm 4-pin SMD right-angle header (the fuse board's I2C, J17)",
  "price_usd": 0.946,
  "price_checked": "2026-10-27",
  "price_note": "LCSC: $0.946 each at 5+, read 2026-10-27",
  "buy": [
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C189895.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.946,
    "stock": "10,230",
    "seller_pn": "C189895"
   },
   {
    "seller": "TLC Electronics",
    "url": "https://tlcelectronics.com/products/detail/JST/SM04B-GHS-TB-LF-SN",
    "in_stock": false,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.3286,
    "stock": "0 in stock (2026-10-27)"
   }
  ],
  "backup": {
   "what": "same part",
   "seller": "TLC Electronics",
   "price_usd": 0.3286
  },
  "specs": {
   "pitch_mm": 1.25,
   "pins": 4
  },
  "sources": [
   "https://www.lcsc.com/product-detail/C189895.html"
  ]
 },
 {
  "id": "jst-ghr-04v-s",
  "key": "gh_housing_4p",
  "category": "connector",
  "vendor": "JST",
  "model": "GHR-04V-S",
  "name": "JST GH 1.25 mm 4-position receptacle housing (W42, the fuse board's I2C lead, both ends)",
  "price_usd": 0.0778,
  "price_checked": "2026-10-27",
  "price_note": "TLC Electronics: $0.0778 each, read 2026-10-27",
  "buy": [
   {
    "seller": "TLC Electronics",
    "url": "https://tlcelectronics.com/products/detail/JST/GHR-04V-S",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.0778,
    "stock": "8,543"
   },
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C160418.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.1121,
    "stock": "270 (5+)",
    "seller_pn": "C160418"
   }
  ],
  "backup": {
   "what": "same part",
   "seller": "LCSC",
   "price_usd": 0.1121
  },
  "specs": {
   "pitch_mm": 1.25,
   "positions": 4
  },
  "sources": [
   "https://tlcelectronics.com/products/detail/JST/GHR-04V-S"
  ]
 },
 {
  "id": "ancor-heat-shrink-ring-12-10-8",
  "key": "ring_12awg_m4",
  "category": "terminal",
  "vendor": "Ancor",
  "model": "adhesive-lined heat-shrink ring, 12-10 AWG, #8 stud",
  "name": "Ancor adhesive-lined heat-shrink ring terminal 12-10 AWG, #8 (M4) stud, tinned copper: the fuse board's M4 studs (W14, W15 (the VESCs))",
  "price_usd": 1.65,
  "price_checked": "2026-10-27",
  "pack_qty": 3,
  "pack_price_usd": 4.95,
  "price_note": "go2marine: $4.95 per 3-pack, read 2026-10-27 (price_usd is per piece)",
  "buy": [
   {
    "seller": "go2marine",
    "url": "https://www.go2marine.com/products/ring-terminals-adhesive-lined-heat-shrink-ancor",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 4.95,
    "pack_qty": 3,
    "stock": "available (store JSON)",
    "seller_pn": "531302-12-10AWG-#8-3"
   },
   {
    "seller": "go2marine",
    "url": "https://www.go2marine.com/products/ring-terminals-adhesive-lined-heat-shrink-ancor",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 32.5,
    "pack_qty": 25,
    "stock": "available (store JSON): the 25-pack"
   }
  ],
  "backup": {
   "what": "the 25-pack",
   "seller": "go2marine",
   "price_usd": 32.5
  },
  "specs": {
   "wire_awg": "12-10",
   "stud": "#8 (M4)"
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  "sources": [
   "https://www.go2marine.com/products/ring-terminals-adhesive-lined-heat-shrink-ancor"
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 },
 {
  "id": "ancor-heat-shrink-ring-16-14-8",
  "key": "ring_14awg_m4",
  "category": "terminal",
  "vendor": "Ancor",
  "model": "adhesive-lined heat-shrink ring, 16-14 AWG, #8 stud",
  "name": "Ancor adhesive-lined heat-shrink ring terminal 16-14 AWG, #8 (M4) stud, tinned copper: the fuse board's M4 studs (W10-W13 (the RS-04s), W33, W41)",
  "price_usd": 1.3167,
  "price_checked": "2026-10-27",
  "pack_qty": 3,
  "pack_price_usd": 3.95,
  "price_note": "go2marine: $3.95 per 3-pack, read 2026-10-27 (price_usd is per piece)",
  "buy": [
   {
    "seller": "go2marine",
    "url": "https://www.go2marine.com/products/ring-terminals-adhesive-lined-heat-shrink-ancor",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 3.95,
    "pack_qty": 3,
    "stock": "available (store JSON)",
    "seller_pn": "531302-16-14AWG-#8-3"
   },
   {
    "seller": "go2marine",
    "url": "https://www.go2marine.com/products/ring-terminals-adhesive-lined-heat-shrink-ancor",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 37.81,
    "pack_qty": 25,
    "stock": "available (store JSON): the 25-pack"
   }
  ],
  "backup": {
   "what": "the 25-pack",
   "seller": "go2marine",
   "price_usd": 37.81
  },
  "specs": {
   "wire_awg": "16-14",
   "stud": "#8 (M4)"
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  "sources": [
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 },
 {
  "id": "ancor-heat-shrink-ring-22-18-8",
  "key": "ring_18awg_m4",
  "category": "terminal",
  "vendor": "Ancor",
  "model": "adhesive-lined heat-shrink ring, 22-18 AWG, #8 stud",
  "name": "Ancor adhesive-lined heat-shrink ring terminal 22-18 AWG, #8 (M4) stud, tinned copper: the fuse board's M4 studs (W8, W16, W17, W21, W22, W23, W27, W40)",
  "price_usd": 1.3167,
  "price_checked": "2026-10-27",
  "pack_qty": 3,
  "pack_price_usd": 3.95,
  "price_note": "go2marine: $3.95 per 3-pack, read 2026-10-27 (price_usd is per piece)",
  "buy": [
   {
    "seller": "go2marine",
    "url": "https://www.go2marine.com/products/ring-terminals-adhesive-lined-heat-shrink-ancor",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 3.95,
    "pack_qty": 3,
    "stock": "available (store JSON)",
    "seller_pn": "531302-22-18AWG-#8-3"
   },
   {
    "seller": "go2marine",
    "url": "https://www.go2marine.com/products/ring-terminals-adhesive-lined-heat-shrink-ancor",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 23.5,
    "pack_qty": 25,
    "stock": "available (store JSON): the 25-pack"
   }
  ],
  "backup": {
   "what": "the 25-pack",
   "seller": "go2marine",
   "price_usd": 23.5
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  "specs": {
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   "stud": "#8 (M4)"
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  "sources": [
   "https://www.go2marine.com/products/ring-terminals-adhesive-lined-heat-shrink-ancor"
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 },
 {
  "id": "mcmaster-91290a148",
  "key": "screw_m4x12_socket",
  "category": "fastener",
  "vendor": "McMaster-Carr",
  "model": "91290A148",
  "name": "Black-oxide alloy steel socket head screw, M4 x 0.7 x 12 mm (the fuse board's M4 studs, down through the lug into the standoff's nyloc)",
  "price_usd": 0.123,
  "price_checked": "2026-10-27",
  "pack_qty": 100,
  "pack_price_usd": 12.3,
  "price_note": "McMaster-Carr: $12.30 per 100-pack (read 2026-10-27; price_usd is per piece)",
  "buy": [
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/91290A148/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 12.3,
    "pack_qty": 100,
    "stock": "product page read (McMaster ships next day)",
    "seller_pn": "91290A148"
   },
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/91290A150/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 14.23,
    "pack_qty": 100,
    "stock": "M4 x 14 of the same series (a stack of three lugs)",
    "seller_pn": "91290A150"
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  ],
  "backup": {
   "what": "M4 x 14 of the same series (a stack of three lugs)",
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   "part_number": "91290A150",
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  "specs": {
   "thread": "M4",
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  "sources": [
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   "https://www.mcmaster.com/91290A150/"
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 {
  "id": "mcmaster-90576a103",
  "key": "nut_m4_nyloc",
  "category": "fastener",
  "vendor": "McMaster-Carr",
  "model": "90576A103",
  "name": "Medium-strength steel nylon-insert locknut, zinc plated, M4 x 0.7 (held in the fuse board standoffs' hex pockets)",
  "price_usd": 0.0492,
  "price_checked": "2026-10-27",
  "pack_qty": 100,
  "pack_price_usd": 4.92,
  "price_note": "McMaster-Carr: $4.92 per 100-pack (read 2026-10-27; price_usd is per piece)",
  "buy": [
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/90576A103/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 4.92,
    "pack_qty": 100,
    "stock": "product page read (McMaster ships next day)",
    "seller_pn": "90576A103"
   },
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/94645A101/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 13.25,
    "pack_qty": 100,
    "stock": "high-strength steel nyloc M4",
    "seller_pn": "94645A101"
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  ],
  "backup": {
   "what": "high-strength steel nyloc M4",
   "seller": "McMaster-Carr",
   "part_number": "94645A101",
   "price_usd": 13.25
  },
  "specs": {
   "thread": "M4",
   "af_mm": 7.0
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  "sources": [
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   "https://www.mcmaster.com/94645A101/"
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 {
  "id": "mcmaster-91290a318",
  "key": "screw_m6x12_socket",
  "category": "fastener",
  "vendor": "McMaster-Carr",
  "model": "91290A318",
  "name": "Black-oxide alloy steel socket head screw, M6 x 1 x 12 mm (the fuse board's BUS+ IN stud, J1)",
  "price_usd": 0.1541,
  "price_checked": "2026-10-27",
  "pack_qty": 100,
  "pack_price_usd": 15.41,
  "price_note": "McMaster-Carr: $15.41 per 100-pack (read 2026-10-27; price_usd is per piece)",
  "buy": [
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/91290A318/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 15.41,
    "pack_qty": 100,
    "stock": "product page read (McMaster ships next day)",
    "seller_pn": "91290A318"
   },
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/91290A316/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 15.49,
    "pack_qty": 100,
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    "seller_pn": "91290A316"
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  ],
  "backup": {
   "what": "M6 x 10 of the same series",
   "seller": "McMaster-Carr",
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   "thread": "M6",
   "length_mm": 12
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  "sources": [
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   "https://www.mcmaster.com/91290A316/"
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 {
  "id": "mcmaster-91290a230",
  "key": "screw_m5x14_socket",
  "category": "fastener",
  "vendor": "McMaster-Carr",
  "model": "91290A230",
  "name": "Black-oxide alloy steel socket head screw, M5 x 0.8 x 14 mm (the fuse board's plate bond, MH1, into the plate's flush nut)",
  "price_usd": 0.1743,
  "price_checked": "2026-10-27",
  "pack_qty": 100,
  "pack_price_usd": 17.43,
  "price_note": "McMaster-Carr: $17.43 per 100-pack (read 2026-10-27; price_usd is per piece)",
  "buy": [
   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/91290A230/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
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    "pack_qty": 100,
    "stock": "product page read (McMaster ships next day)",
    "seller_pn": "91290A230"
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   {
    "seller": "McMaster-Carr",
    "url": "https://www.mcmaster.com/91290A228/",
    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 16.36,
    "pack_qty": 100,
    "stock": "M5 x 12 of the same series, with MH1's standoff printed 1.6 mm shorter",
    "seller_pn": "91290A228"
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  ],
  "backup": {
   "what": "M5 x 12 of the same series, with MH1's standoff printed 1.6 mm shorter",
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   "part_number": "91290A228",
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  "specs": {
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   "https://www.mcmaster.com/91290A228/"
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 {
  "id": "mcmaster-7130k12",
  "key": "cable_tie_4in",
  "category": "fastener",
  "vendor": "McMaster-Carr",
  "model": "7130K12",
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  "price_usd": 0.0353,
  "price_checked": "2026-10-27",
  "pack_qty": 100,
  "pack_price_usd": 3.53,
  "price_note": "McMaster-Carr: $3.53 per 100-pack (read 2026-10-27; price_usd is per piece)",
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    "seller": "McMaster-Carr",
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    "ships_from": "US",
    "read_on": "2026-10-27",
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    "pack_qty": 100,
    "stock": "product page read (McMaster ships next day)",
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   {
    "seller": "McMaster-Carr",
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    "in_stock": true,
    "ships_from": "US",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": null,
    "pack_qty": 100,
    "stock": "standard 8-1/2 in (price not shown on the page read)",
    "seller_pn": "7130K14"
   }
  ],
  "backup": {
   "what": "standard 8-1/2 in (price not shown on the page read)",
   "seller": "McMaster-Carr",
   "part_number": "7130K14",
   "price_usd": null
  },
  "specs": {
   "length_in": 4
  },
  "sources": [
   "https://www.mcmaster.com/7130K12/",
   "https://www.mcmaster.com/7130K14/"
  ]
 },
 {
  "id": "lcsc-c22859",
  "key": "res_10r_0603",
  "category": "passive",
  "vendor": "UNI-ROYAL",
  "model": "0603WAF100JT5E",
  "name": "10 Ohm 1 % 0603 (the fuse board's R2, R3: the INA228's input resistors)",
  "price_usd": 0.0033,
  "price_checked": "2026-10-27",
  "price_note": "LCSC: $0.0033 each, sold 20+, read 2026-10-27",
  "buy": [
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C22859.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.0033,
    "stock": "in stock (20+)",
    "seller_pn": "C22859"
   },
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C109318.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.0062,
    "stock": "in stock: YAGEO RC0603FR-0710RL (100+)",
    "seller_pn": "C109318"
   }
  ],
  "backup": {
   "what": "YAGEO RC0603FR-0710RL (100+)",
   "seller": "LCSC",
   "price_usd": 0.0062
  },
  "specs": {
   "min_order": 20
  },
  "sources": [
   "https://www.lcsc.com/product-detail/C22859.html"
  ]
 },
 {
  "id": "lcsc-c15725",
  "key": "cap_100n_100v_0603",
  "category": "passive",
  "vendor": "Samsung",
  "model": "CL10B104KC8NNNC",
  "name": "100 nF 100 V X7R 0603 (the fuse board's C1: the INA228's input filter)",
  "price_usd": 0.0134,
  "price_checked": "2026-10-27",
  "price_note": "LCSC: $0.0134 each, sold 50+, read 2026-10-27",
  "buy": [
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C15725.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.0134,
    "stock": "in stock (50+)",
    "seller_pn": "C15725"
   },
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C161117.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.0584,
    "stock": "in stock: muRata 100 nF 100 V 0603 (10+)",
    "seller_pn": "C161117"
   }
  ],
  "backup": {
   "what": "muRata 100 nF 100 V 0603 (10+)",
   "seller": "LCSC",
   "price_usd": 0.0584
  },
  "specs": {
   "min_order": 50
  },
  "sources": [
   "https://www.lcsc.com/product-detail/C15725.html"
  ]
 },
 {
  "id": "lcsc-c14663",
  "key": "cap_100n_50v_0603",
  "category": "passive",
  "vendor": "YAGEO",
  "model": "CC0603KRX7R9BB104",
  "name": "100 nF 50 V X7R 0603 (the fuse board's C2: VS decoupling)",
  "price_usd": 0.0082,
  "price_checked": "2026-10-27",
  "price_note": "LCSC: $0.0082 each, sold 50+, read 2026-10-27",
  "buy": [
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C14663.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.0082,
    "stock": "in stock (50+)",
    "seller_pn": "C14663"
   },
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C1591.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.0078,
    "stock": "in stock: Samsung CL10B104KB8NNNC (100+)",
    "seller_pn": "C1591"
   }
  ],
  "backup": {
   "what": "Samsung CL10B104KB8NNNC (100+)",
   "seller": "LCSC",
   "price_usd": 0.0078
  },
  "specs": {
   "min_order": 50
  },
  "sources": [
   "https://www.lcsc.com/product-detail/C14663.html"
  ]
 },
 {
  "id": "lcsc-c163339",
  "key": "res_4k7_2512",
  "category": "passive",
  "vendor": "YAGEO",
  "model": "RC2512FK-074K7L",
  "name": "4.7 kOhm 1 % 1 W 2512 (the fuse board's R4: VBUS series)",
  "price_usd": 0.08,
  "price_checked": "2026-10-27",
  "price_note": "LCSC: $0.08 each, sold 10+, read 2026-10-27",
  "buy": [
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C163339.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.08,
    "stock": "in stock (10+)",
    "seller_pn": "C163339"
   },
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C33178.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.0463,
    "stock": "in stock: UNI-ROYAL 2512WJ0472T4E, 5 % (10+)",
    "seller_pn": "C33178"
   }
  ],
  "backup": {
   "what": "UNI-ROYAL 2512WJ0472T4E, 5 % (10+)",
   "seller": "LCSC",
   "price_usd": 0.0463
  },
  "specs": {
   "min_order": 10
  },
  "sources": [
   "https://www.lcsc.com/product-detail/C163339.html"
  ]
 },
 {
  "id": "traco-tep-150-4812wi",
  "key": "traco-tep-150-4812wi",
  "category": "power",
  "vendor": "TRACO Power",
  "model": "TEP 150-4812WI",
  "name": "TRACO TEP 150-4812WI DC-DC converter, 18-75 V in (4:1), 12 V 12.5 A (150 W), isolated 2,250 V DC, chassis mount, screw terminals",
  "price_usd": null,
  "price_checked": "2026-10-27",
  "price_note": "the 24 V twin TEP 150-4815WI is listed at TRC Electronics at $253.69 (read 2026-10-27); read the 4812WI's own listing before ordering (D40)",
  "buy": [
   {
    "seller": "TRC Electronics",
    "url": "https://www.trcelectronics.com/products/traco-power-tep-150-4812wi",
    "read_on": "2026-10-27",
    "stock": "listing to read (the 4815WI's page was read)"
   },
   {
    "seller": "Digi-Key",
    "url": "https://www.digikey.com/en/products/detail/traco-power/TEP-150-4812WI/9343574",
    "read_on": "2026-10-27",
    "stock": "listed (page not read: the site refused the reader)"
   }
  ],
  "specs": {
   "vin_v": [
    18,
    75
   ],
   "vout_v": 12,
   "iout_a": 12.5,
   "efficiency": 0.89,
   "size_mm": [
    98,
    65,
    35.7
   ],
   "mass_g": 300,
   "mount": "base flange with slots (59 mm spacing per the outline)",
   "undervoltage_lockout_v": [
    15.6,
    16.8
   ],
   "surge_v": 100
  },
  "sources": [
   "https://www.farnell.com/datasheets/1750007.pdf",
   "https://www.trcelectronics.com/products/traco-power-tep-150-4815wi"
  ]
 },
 {
  "id": "terrafirma-dewalt-20v-adapter-10awg",
  "key": "terrafirma-dewalt-20v-adapter-10awg",
  "category": "power",
  "vendor": "Terrafirma Technology",
  "model": "4pack 10AWG Adapter for DeWALT 20V (Amazon B07HYJ628S)",
  "name": "Terrafirma Technology DeWalt 20 V battery adapter, 10 AWG leads (1 ft), 30 A stated, no fuse or switch, 4-pack",
  "price_usd": 64.0,
  "price_checked": "2026-10-27",
  "pack_qty": 4,
  "pack_price_usd": 64.0,
  "price_note": "Amazon listing, $64.00 for four (read 2026-10-27); its outline is not published: measure on arrival (the bay's plates are printed)",
  "buy": [
   {
    "seller": "Amazon (Terrafirma Technology)",
    "url": "https://www.amazon.com/dp/B07HYJ628S",
    "price_usd": 64.0,
    "pack_qty": 4,
    "read_on": "2026-10-27",
    "stock": "listed"
   },
   {
    "seller": "Amazon (Terrafirma, 12 AWG single)",
    "url": "https://www.amazon.com/dp/B07TQFBZ6N",
    "price_usd": 19.0,
    "read_on": "2026-10-27",
    "stock": "listed; 12 AWG, M4/#6 mounting holes, current not stated",
    "note": "not drop-in: 12 AWG"
   }
  ],
  "specs": {
   "awg": 10,
   "current_a": 30,
   "fits": "DeWalt 20 V MAX packs (FLEXVOLT stays in 20 V mode: check the slider on the first unit)"
  },
  "sources": [
   "https://www.amazon.com/dp/B07HYJ628S"
  ]
 },
 {
  "id": "littelfuse-099707.5",
  "key": "fuse_mini58_7a5",
  "category": "fuse",
  "vendor": "Littelfuse",
  "model": "099707.5WXN",
  "name": "Littelfuse MINI 58V blade fuse 7.5 A (the turret's feed W22 and the 12 V rail W43, D66)",
  "price_usd": 0.5766,
  "price_checked": "2026-10-27",
  "price_note": "LCSC: $0.5766 each (10+: $0.4698), read 2026-10-27",
  "buy": [
   {
    "seller": "LCSC",
    "url": "https://www.lcsc.com/product-detail/C2680610.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.5766,
    "stock": "3,810",
    "seller_pn": "C2680610"
   },
   {
    "seller": "LCSC (other suppliers)",
    "url": "https://www.lcsc.com/product-detail/C2680610.html",
    "in_stock": true,
    "ships_from": "CN",
    "read_on": "2026-10-27",
    "source": "page",
    "price_usd": 0.3118,
    "stock": "3,000 (5-7 business days)",
    "seller_pn": "C2680610"
   }
  ],
  "backup": {
   "what": "same fuse, LCSC's other-supplier stock",
   "seller": "LCSC",
   "price_usd": 0.3118
  },
  "specs": {
   "rating_a": 7.5,
   "voltage_v_dc": 58,
   "interrupt_a_at_58v": 1000,
   "i2t_typ_a2s": 68
  },
  "sources": [
   "https://www.lcsc.com/product-detail/C2680610.html",
   "https://www.littelfuse.com/assetdocs/littelfuse-datasheet-997-mini58v?assetguid=f4bf5724-5a40-4a44-8f08-c52ae959a5ef"
  ]
 }
]